Impact of swelling power and granule size on pasting of blends of potato, waxy rice and maize starches
Impact of swelling power and granule size on pasting of blends of potato, waxy rice and maize starches
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DOI：
10.1016/j.foodhyd.2015.06.012
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发表时间：
2016
影响因子：
10.7
通讯作者：
J. Waterschoot;S. Gomand;J. Delcour
中科院分区：
文献类型：
--
作者：
J. Waterschoot;S. Gomand;J. Delcour
研究了膨胀势和颗粒大小对马铃薯淀粉（PS）与玉米淀粉（MS）和糯米淀粉（WRS）共混糊化的影响。首先，共混物中的一种淀粉的粘度发展通过将其交联至这样的程度而降低，使得在所使用的浓度下用快速粘度分析仪没有记录到粘度发展。这样，共混物中淀粉之间的溶胀力的差异就改变了。比较的糊化配置文件的共混物的交联PS和WRS或MS与那些只有天然淀粉的共混物，表明交联PS有助于粘度发展时，另一种淀粉是通过增加总固体含量和结合一些可用的水。这也观察到的PS和交联WRS和MS的共混物。在第二种方法中，粒度的影响进行了研究，通过大小分级的PS到PS小，PS中，PS大，并通过共混这些馏分与WRS。PS small比PS medium和PS large具有更低的直链淀粉和更高的磷含量，更高的膨胀力和更低的碳水化合物淋失。所有级分具有相似的糊化性质。PS小的WRS共混物的峰值粘度、最小粘度和最终粘度均高于PS中或PS大的。这可能是由于PSsmall的较高溶胀能力和较高刚性（由于其较低的粒度）。
This study investigated the impact of swelling power and granule size on pasting of blends of potato starch (PS) and maize (MS) or waxy rice (WRS) starch. First, viscosity development of one starch in the blend was reduced by cross-linking it to such extent that no viscosity development was recorded with Rapid Visco Analyser at the used concentrations. This way the difference in swelling power between the starches in a blend was changed. Comparison of the pasting profiles of blends of cross-linked PS and WRS or MS with those of blends of only native starch, showed that cross-linked PS contributes to viscosity development when another starch is present by increasing the total solid content and binding some of the available water. This was also observed for blends of PS and cross-linked WRS and MS. In a second approach, the impact of granule size was investigated by size fractionation of PS into PSsmall, PSmediumand PSlargeand by blending these fractions with WRS. PSsmallhad lower amylose and higher phosphorus contents, a higher swelling power and lower carbohydrate leaching than PSmediumand PSlarge. All fractions had similar pasting properties. Peak, minimum and end viscosities were higher for blends of WRS with PSsmallthan for those with PSmediumor PSlarge. This is probably due to the higher swelling power and higher rigidity (due to its lower granule size) of PSsmall.